115799940 has 144 divisors (see below), whose sum is σ = 372048768. Its totient is φ = 29094912.

The previous prime is 115799909. The next prime is 115799941. The reversal of 115799940 is 49997511.

It is a super-2 number, since 2×115799940² = 26819252208007200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (115799941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 343452 + ... + 343788.

It is an arithmetic number, because the mean of its divisors is an integer number (2583672).

Almost surely, 2^115799940 is an apocalyptic number.

115799940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115799940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186024384).

115799940 is an abundant number, since it is smaller than the sum of its proper divisors (256248828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115799940 is a wasteful number, since it uses less digits than its factorization.

115799940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 115799940 is about 10761.0380540169. The cubic root of 115799940 is about 487.4193633886.

The spelling of 115799940 in words is "one hundred fifteen million, seven hundred ninety-nine thousand, nine hundred forty".